Originally Posted by
MrMoPar
I understand what your saying, but, regarding the gearing, one must consider the tranny ratios along with the rear end ratios. The SRT6 rear and tranny ratios are optimized for the overall power curve.
One must also consider that a factory tuned setup is going to be more efficient in developing power from a pound of boost. I would venture to guess 10 to 12 HP per pound of boost for an underchassis turbo depending on the level of tuning refinement.
The SRT6 is a positive displacement blower, so it creates significant torque as soon as the clutch engages. One thing I found on the initial testing of the turbo system on the 300C with an intercooler developed very little power in first and second gear. Deleting the intercooler drastically improved bottom end power.
I ran my 300C against an identical charger running same boost, only he ran with a centrifugal SC. I made a lot more torque, but the SC would get out of the hole faster due to traction issues. He ran about 106 in the quarter, I ran 111. He would still beat me both to the lights, and slightly faster ET.
While it would be a much closer race, a stock SRT6 against an NA turbo running 8psi, the SRT6 is still going to have the edge.
Now swap that NA block with a forged SRT6 block, push the turbo to 10 PSI, and you have a game changer.
Don't get me wrong, an NA crossfire with 7-8 PSI will be a riot. I love turbos, and would much rather have a turbo SRT6 than a supercharged SRT6 any day.
All good points, but I believe the aftermarket is more capable of pushing the most power out of each pound of boost simply because they arent concerned with providing the vehicle with a warranty covering several tens of thousands of miles. A competent tuner can tune a specific engine to produce its absolute peak power output in pretty much all aspects that it will run in where an OEM application is more of a tune for best results in a broad range of aspects. There is always more to gain when working with an OEM application, boosted or otherwise, simply because an engine manufacturer will never make the engine run at 100% all the time, for reliability and dependability reasons.
I still think that with the right tuning, a turbo'd NA with 8ish lbs of boost would probably give a bone stock SRT a run for its money, might even have an edge.
With SRT internal upgrades (forged pistons, crank, etc) pushing over 10 PSI boost would give modded SRTs a hard time.
Simply my opinion however. An opinion that may not ever have a chance to be realized unfortunately....